/Engine/Plugins/Developer/Concert/ConcertUI/ConcertSharedSlate/Source/ConcertSharedSlate/Public/Session/Activity/ActivityColumn.h
Called to populate the search terms when rows are search
[FActivityColumn](API\Plugins\ConcertSharedSlate\Session\Activity\FActivityColumn) & PopulateSearchString ( [FPopulateSearchString](API\Plugins\ConcertSharedSlate\Session\Activity\FActivityColumn\FPopulateSearchS-) Callback )